Article II, Section 4 of the Constitution provides as follows:
“The President, Vice President and all civil Officers of the United States shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors."
Among those high crimes is the intentional violation of the oath of office administered to the President and all other federal officials. Federal law at 5 U.S.C. 7311 specifically provides that violation of the oath of office includes advocating the overthrowing of our constitutional form of government. This is specifically declared a criminal offense in 18 U.S.C. 1918 and is punishable by both a fine and imprisonment.
Obama, Eric Holder, and numerous other members of his administration are in violation of their oath.